I'd say this movie is more PG-13 than PG. There is true scary violence (done by unseen forces, not person to person), including scenes where braces wrap around a child's face, a tree tries to eat a child, and everyone involved is put in some sort of emanate physical danger. While the special effects were done in the 80's, and some scenes aren't as realistic as they would be today, they are still cringe and sometimes scream inducing. However, the good messages conveyed throughout the movie are solid holding points. The parents don't leave any of their children behind, and in fact go to great lengths to protect and rescue them. The children rely on their parents, and the family works as a cohesive unit to survive the situation they are in. Ultimately, I'd say most mature 13 yr olds can handle this movie, with parental guidance. Any younger is much too iffy.